I was referring to the module configuration that we have on Cisco 3925 that has 1x EVM-HD-8FXS/DID + 2x EM3-HDA-8FXS/DID and the maximum FXS ports that we can use in this configuration. Base on that table it is only 16 and not 24.

I wanted to confirm whether 16 is when the FXS ports are use with DID signalling. If we use them plainly as FXS, can we use all of the 24 ports?